Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Brett Howard Herzog, MDPHD

Individual provider Internal Medicine Physician · NPI 1023499282

Dr. Brett Howard Herzog, MDPHD is a Medical Oncology in Shiloh, Illinois. Graduated from University of Oklahoma College of Medicine in 2015, 11 years ago. Practices with Washington University, a 2,986-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
11
Trained at
University of Oklahoma College of Medicine
Licensed in
IL
In the registry since
2015
Specialties on file
2

Practice location Address checks out

1418 Cross St Div Im Medical Oncology Ste 180
Shiloh, IL 62269-2914
Phone: (618) 607-1340
Fax: (618) 622-9724
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Medical Oncology Physician (primary) Taxonomy 207RX0202X · Licence 036153509 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 036153509 (IL)

Record details

NPI number1023499282
Entity typeIndividual (Type 1)
GenderMale
Credentials MDPHD
Sole proprietorNo
NPI enumeratedJune 13, 2015
Last updated in NPPESApril 21, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyMEDICAL ONCOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF OKLAHOMA COLLEGE OF MEDICINE
Graduated 2015 (11 years in practice)
Group practice Washington University — 2986 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Shiloh